ArmsMVP不支持Android5.0以下的设备

Android4.3系统
```java
java.lang.RuntimeException: Unable to start activity ComponentInfo{me.jessyan.mvparms.demo/me.jessyan.mvparms.demo.mvp.ui.activity.UserActivity}: java.lang.RuntimeException: Failed to call observer method
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2214)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2264)
at android.app.ActivityThread.access$600(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1259)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5136)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: Failed to call observer method
at androidx.lifecycle.ClassesInfoCache$MethodReference.invokeCallback(ClassesInfoCache.java:226)
at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeMethodsForEvent(ClassesInfoCache.java:194)
at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeCallbacks(ClassesInfoCache.java:185)
at androidx.lifecycle.ReflectiveGenericLifecycleObserver.onStateChanged(ReflectiveGenericLifecycleObserver.java:36)
at androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.java:361)
at androidx.lifecycle.LifecycleRegistry.forwardPass(LifecycleRegistry.java:300)
at androidx.lifecycle.LifecycleRegistry.sync(LifecycleRegistry.java:339)
at androidx.lifecycle.LifecycleRegistry.moveToState(LifecycleRegistry.java:145)
at androidx.lifecycle.LifecycleRegistry.handleLifecycleEvent(LifecycleRegistry.java:131)
at androidx.lifecycle.ReportFragment.dispatch(ReportFragment.java:123)
at androidx.lifecycle.ReportFragment.onActivityCreated(ReportFragment.java:76)
at android.app.Fragment.performActivityCreated(Fragment.java:1703)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:903)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1057)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1039)
at android.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1840)
at android.app.Activity.performCreate(Activity.java:5136)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2178)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2264) 
at android.app.ActivityThread.access$600(ActivityThread.java:144) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1259) 
at android.os.Handler.dispatchMessage(Handler.java:99) 
at android.os.Looper.loop(Looper.java:137) 
at android.app.ActivityThread.main(ActivityThread.java:5136) 
at java.lang.reflect.Method.invokeNative(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:525) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
at dalvik.system.NativeStart.main(Native Method) 
Caused by: java.lang.VerifyError: okhttp3/internal/platform/Android10Platform
at okhttp3.internal.platform.Platform.findPlatform(Platform.java:201)
at okhttp3.internal.platform.Platform.(Platform.java:78)
at okhttp3.OkHttpClient.newSslSocketFactory(OkHttpClient.java:292)
at okhttp3.OkHttpClient.(OkHttpClient.java:258)
at okhttp3.OkHttpClient$Builder.build(OkHttpClient.java:1040)
at com.jess.arms.di.module.ClientModule.provideClient(ClientModule.java:132)
at com.jess.arms.di.module.ClientModule_ProvideClientFactory.provideClient(ClientModule_ProvideClientFactory.java:68)
at com.jess.arms.di.module.ClientModule_ProvideClientFactory.get(ClientModule_ProvideClientFactory.java:53)
at com.jess.arms.di.module.ClientModule_ProvideClientFactory.get(ClientModule_ProvideClientFactory.java:14)
at dagger.internal.DoubleCheck.get(DoubleCheck.java:47)
at com.jess.arms.di.module.ClientModule_ProvideRetrofitFactory.get(ClientModule_ProvideRetrofitFactory.java:48)
at com.jess.arms.di.module.ClientModule_ProvideRetrofitFactory.get(ClientModule_ProvideRetrofitFactory.java:13)
at dagger.internal.DoubleCheck.get(DoubleCheck.java:47)
at com.jess.arms.integration.RepositoryManager.obtainRetrofitService(RepositoryManager.java:96)
at me.jessyan.mvparms.demo.mvp.model.UserModel.getUsers(UserModel.java:63)
at me.jessyan.mvparms.demo.mvp.presenter.UserPresenter.request

```

Bắt đầu với lỗi tại ClientModule.java:132 và stack trace đi qua okhttp3.internal.platform.Platform.findPlatform, nơi báo cáo Android10Platform trên Android 4.3. Tái hiện lỗi khởi động trên thiết bị hoặc trình giả lập chạy phiên bản thấp hơn Android 5.0, sau đó xác minh rằng ứng dụng khởi động và yêu cầu của người dùng thành công trên nền tảng đó.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.